Temporary red eye can safely be treated when the cause of the redness is established (e.g. cannabis induced corneal vasodilation).[3] However, continuous use is not recommended without knowing an underlying condition.
Side effects
A few warnings and contraindications that apply to all naphazoline-containing substances intended for medicinal use are:
The non-hydrochloride form of Naphazoline has the molecular formula C14H14N2 and a molar mass of 210.28 g/mol. The HCl salt form has a molar mass of 246.73 g/mol.
^Fischer J, Ganellin CR (2006). Analogue-based Drug Discovery. John Wiley & Sons. p. 552. ISBN 9783527607495.
^ a b cHosten LO, Snyder C (2020). "Over-the-Counter Ocular Decongestants in the United States - Mechanisms of Action and Clinical Utility for Management of Ocular Redness". Clinical Optometry. 12: 95–105. doi:10.2147/OPTO.S259398. PMC 7399465. PMID 32801982.
^Yazulla S (September 2008). "Endocannabinoids in the retina: from marijuana to neuroprotection". Progress in Retinal and Eye Research. 27 (5): 501–526. doi:10.1016/j.preteyeres.2008.07.002. PMC 2584875. PMID 18725316.
^Zavala JA, Pereira ER, Zétola VH, Teive HA, Nóvak EM, Werneck LC (September 2004). "Hemorrhagic stroke after naphazoline exposition: case report". Arquivos de Neuro-Psiquiatria. 62 (3B): 889–891. doi:10.1590/S0004-282X2004000500030. PMID 15476091.
^"Naphazoline - FDA prescribing information, side effects and uses". Drugs.com.